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本文列举了世界各国控制VOD过程的方法,指出使用氧浓差电池控制VOD过程的基本原理及其优点。论述了氧浓差电池的构造、安装及使用。在实验室条件下,运用热力学计算求得一定温度下氧浓差电势(E_0)和氧浓度O_2％的对应值。通过在大连钢厂应用氧浓差电池控制VOD过程的工业性实验,得出了各种正常冶炼和不正常冶炼的典型曲线。用氧浓差电池並辅以其他方法控制VOD过程,炼出了不锈钢、超低碳不锈钢、超纯工业纯铁及精密合金20多炉。超低碳不锈钢的成功率达100％,铬回收率超过96％。由于氧浓差电池在VOD过程控制上的应用在国内还是首次,要使它成为冶金自动化的工具,还要做大量工作。
This article lists the ways in which countries around the world control VOD processes and points out the basic principles and advantages of using oxygen concentration cells to control VOD processes. The structure, installation and use of oxygen concentration cell are discussed. Under laboratory conditions, the corresponding values of oxygen concentration potential (E 0) and oxygen concentration O 2% at a certain temperature were obtained by thermodynamic calculation. Through the industrial experiment of controlling the VOD process with oxygen concentration cell in Dalian Steel Plant, the typical curves of normal smelting and abnormal smelting are obtained. Oxygen concentration of the battery and supplemented by other methods to control the VOD process, refining stainless steel, ultra-low carbon stainless steel, ultra-pure industrial iron and precision alloy more than 20 furnaces. Ultra-low carbon stainless steel success rate of 100%, chromium recovery rate of more than 96%. As the oxygen concentration of the battery in the VOD process control application is the first time in the country, to make it a tool for metallurgical automation, but also to do a lot of work.